<template>
  <section>
    <!--工具条-->
    <el-col :span="24" class="toolbar" style="padding-bottom: 0px">
      <el-form :inline="true">
        <el-form-item>
          <el-input v-model="keyword" placeholder="关键字"></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="warning" v-on:click="keywordQuery">查询</el-button>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" @click="handleAdd">新增</el-button>
        </el-form-item>
      </el-form>
    </el-col>

    <!--列表v-loading="listLoading"-->
    <el-table
      :data="tableDatas"
      v-loading="listLoading"
      @selection-change="handleSelectionChange"
      highlight-current-row
      style="width: 100%"
    >
      <!--多选框-->
      <el-table-column type="selection" width="55"> </el-table-column>
      <el-table-column type="index" width="70" label="序号"> </el-table-column>
      <el-table-column prop="typeName" label="文章类型" width="120">
      </el-table-column>
      <el-table-column prop="status" label="类型状态" width="120">
        <template scope="scope">
          <span v-if="scope.row.status == 1" style="color: green">可用</span>
          <span v-else style="color: red">不可用</span>
        </template>
      </el-table-column>
      <el-table-column prop="createTime" label="创建时间" width="150">
      </el-table-column>
      <el-table-column prop="updateTime" label="更新时间" width="200">
      </el-table-column>
      <el-table-column
        prop="parent.typeName"
        label="父级类型"
        width="300"
        show-overflow-tooltip
      >
      </el-table-column>
      <el-table-column label="操作">
        <template scope="scope">
          <el-button size="small" @click="handleEdit(scope.row)"
            >编辑</el-button
          >
          <el-button type="danger" size="small" @click="handleDel(scope.row)"
            >删除</el-button
          >
        </template>
      </el-table-column>
    </el-table>
    <!--工具条-->
    <el-col :span="24" class="toolbar">
      <el-button
        type="danger"
        :disabled="this.sels.length === 0"
        @click="handlePatchDel"
        >批量删除</el-button
      >
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="currentPage"
        :page-sizes="[5, 10, 15]"
        :page-size="pageSize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="totals"
        style="float: right"
      >
      </el-pagination>
    </el-col>

    <!--添加或修改界面-->
    <el-dialog
      :title="title"
      :visible.sync="saveFormVisible"
      :close-on-click-modal="false"
    >
      <el-form
        :model="saveForm"
        label-width="80px"
        :rules="saveFormRules"
        ref="saveForm"
      >
        <el-form-item label="类型名称" prop="typeName">
          <el-input v-model="saveForm.typeName" auto-complete="off"></el-input>
        </el-form-item>
        <el-form-item label="类型状态">
          <el-radio v-model="saveForm.status" :label="1">可用</el-radio>
          <el-radio v-model="saveForm.status" :label="0">不可用</el-radio>
        </el-form-item>
        <el-form-item label="父类型" prop="parentId">
          <el-cascader
          emitPath: false
          v-model="saveForm.parentId"
            :options="options"
            :props="{ 
              checkStrictly: true,
              value:'id',
              label:'typeName',
              emitPath: false}"
            clearable
          ></el-cascader>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click.native="saveFormVisible = false">取消</el-button>
        <el-button type="primary" @click.native="saveSubmit">提交</el-button>
      </div>
    </el-dialog>
  </section>
</template>

<script>
export default {
  data() {
    return {
      options: [],
      title: "",
      //1.分页查询相关数据
      totals: 0, //总记录条数
      currentPage: 1, //当前页,要传递到后台的
      pageSize: 5, //每页显示多少条
      tableDatas: [], //当前页数据
      listLoading: false,

      //2.高级查询相关数据
      keyword: "",

      //3.删除相关数据

      //4.批量删除相关数据
      sels: [], //存储多选记录

      //5.添加和修改相关数据
      saveFormVisible: false,
      saveForm: {
        id: null,
        typeName: "",
        status: "",
        parentId: null,
      },

      //6.添加和修改校验规则-表单项校验
      saveFormRules: {
        typeName: [
          { required: true, message: "请输入类型名称", trigger: "blur" },
        ],
      },
    };
  },
  methods: {
    //1.分页查询相关方法
    //1.1.获取列表数据
    getTableData() {
      let para = {
        currentPage: this.currentPage,
        pageSize: this.pageSize,
        keyword: this.keyword,
      };
      this.listLoading = true; //显示加载圈!!!
      //分页查询
      this.$http.post("/articleType", para).then((result) => {
        console.log(result);
        this.totals = result.data.total; //注意后端返回的是total,而不是totals!!!,可以打印result查看
        this.tableDatas = result.data.list;
        this.listLoading = false; //关闭加载圈!!!
      });
    },
    //1.2.选择第几页时触发
    handleCurrentChange(curentPage) {
      this.currentPage = curentPage;
      this.getTableData(); //获取列表数据
    },
    //1.3.选择每页显示记录条数时触发
    handleSizeChange(pageSize) {
      this.pageSize = pageSize;
      this.getTableData(); //获取列表数据
    },

    //2.高级查询相关方法
    keywordQuery() {
      this.currentPage = 1; //!!!

      this.getTableData(); //调用调用分页列表方法,因为关键字keyword已经进行了v-model的双向绑定!
    },

    //3.删除相关方法
    handleDel(row) {
      this.$confirm("此操作将永久删除该用户，是否继续？", "删除", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          // 获取当前用户的id
          this.$http
            .delete("/articleType/" + row.id)
            .then((res) => {
              console.log(res);
              if (res.data.success) {
                // 删除成功
                this.$message.success(res.data.msg);

                let lastPage = Math.ceil(this.totals / this.pageSize); // 向上取整，计算出当前的总页数，这个页数就是最后一页

                // 删除最后一页，只有一条数据，要返回上一页，并且最后一页不能是第一页
                if (
                  this.currentPage != 1 &&
                  this.totals % this.pageSize == 1 &&
                  this.currentPage == lastPage
                ) {
                  // 设置返回上一页
                  this.currentPage = this.currentPage - 1;
                }
                // 删除成功，重新查询列表
                this.getTableData();
              } else {
                this.$message.error(res.data.msg);
              }
            })
            .catch(() => {
              this.$message.error("网络异常，请稍后重试！【400/404/...】");
            });
        })
        .catch(() => {
          this.$message.info("已取消删除");
        });
    },

    handleDel(row) {
      this.$http
        .delete("/articleType/" + row.id)
        .then((res) => {
          if (res.data.success) {
            this.$message.success("删除成功！");
            this.getTableData();
          } else {
            this.$message.error(res.data.msg);
          }
        })
        .catch((res) => {
          this.$message.error("网络异常，请稍后重试！【400/404/...】");
        });
    },

    //4.批量删除相关方法
    //4.1.选项改变时触发
    handleSelectionChange(val) {
      console.log(val);
      //传入的参数是选中的行的数据,行的数组,我们要从这个数组获取id,得到一个id数组[1,2,3,4]
      this.sels = val.map((u) => u.id); //!!!数组的map映射!!!
      console.log(this.sels);
    },
    //4.2.批量删除
    handlePatchDel() {
      this.$confirm("此操作将永久删除选中的用户，是否继续？", "删除", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(() => {
          //获取当前用户的id
          this.$http
            .patch("/articleType", this.sels)
            .then((res) => {
              if (res.data.success) {
                //删除成功
                this.$message.success(res.data.msg);
                //删除成功，重新查询列表
                this.getTableData();
              } else {
                this.$message.error(res.data.msg);
              }
            })
            .catch(() => {
              this.$message.error("网络异常，请稍后重试！【400/404/...】");
            });
        })
        .catch(() => {
          this.$message.info("已取消删除");
        });
    },

    //5.添加和修改相关方法
    //5.1.点击添加弹出对话框
    handleAdd() {
      //1.清空form表单
      this.saveForm = { status: 1 };
      //2.设置标题
      this.title = "新增";
      //3.弹出模态框
      this.saveFormVisible = true;
      this.getTypeTree(-1);
    },
    //5.2.点击修改弹出对话框
    handleEdit(row) {
      //1.设置标题
      this.title = "编辑";

      //2.将row对象拷贝给一个空对象,空对象赋值给saveForm.避免修改的时候影响行数据
      this.saveForm = Object.assign({}, row); //深拷贝!!!

      //3.弹出模态框
      this.saveFormVisible = true;
      this.getTypeTree(row.id);
    },

    getTypeTree(id) {
      this.$http.get("/articleType/getTypeTree/"+id).then((res) => {
        console.log(res);
        this.options = res.data.data;
      });
    },
    saveSubmit() {
      this.$refs["saveForm"].validate((valid) => {
        if (valid) {
          this.$http
            .put("/articleType", this.saveForm)
            .then((res) => {
              if (res.data.success) {
                //1.提示操作成功
                this.$message.success(res.data.msg);

                //2.关闭对话框
                this.saveFormVisible = false;
                if (this.saveForm.id == null) {
                  this.totals++;
                  this.currentPage = Math.ceil(this.totals / this.pageSize);
                }
                this.getTableData();
              } else {
                this.$message.error(res.data.msg);
              }
            })
            .catch(() => {
              this.$message.error("网络异常，请稍后重试！【400/404/...】");
            });
        } else {
          this.$message.error("表单校未通过！");
          return false;
        }
      });
    },
  },
  mounted() {
    this.getTableData();
  },
};
</script>

<style scoped></style>
